A hallucinogenic drug that is apparently becoming increasingly popular is extremely powerful but does not appear to produce any adverse effects in the short term in healthy people, according to what researchers say is the first careful study examining the substance.

If this all sounds a bit Shakespearean to you, note that there's a take-home message: Because stress is well known to exacerbate asthma, especially among people who are depressed, and as Facebook can be a source of social and emotional stress for so many, doctors treating people with asthma should be aware of Facebook's (and other social networks') potential role in triggering asthma attacks.

We've all heard about how "living in the moment" is one of the keys to happiness. Well, some new research supports that idea, showing that people tend to be less happy when they let their minds wander. Matthew Killingsworth and Daniel Gilbert of Harvard University are conducting an unusual study...

Teenagers who have abortions do not appear to be at increased risk for depression or low self-esteem, according to the first nationally representative study to examine the issue. Jocelyn T. Warren of Oregon State University and her colleagues analyzed data collected from 289 teenage girls who reported having at least...

Many people look forward with dread to their 50th birthday. That, of course, is when we officially become middle-aged. But some recent research has uncovered something that might be surprising about middle-aged people: They're actually happier.